/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:30:25,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:30:25,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:30:25,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:30:25,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:30:25,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:30:25,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:30:25,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:30:25,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:30:25,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:30:25,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:30:25,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:30:25,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:30:25,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:30:25,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:30:25,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:30:25,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:30:25,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:30:25,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:30:25,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:30:25,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:30:25,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:30:25,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:30:25,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:30:25,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:30:25,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:30:25,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:30:25,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:30:25,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:30:25,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:30:25,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:30:25,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:30:25,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:30:25,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:30:25,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:30:25,234 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:30:25,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:30:25,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:30:25,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:30:25,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:30:25,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:30:25,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:30:25,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:30:25,236 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:30:25,236 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:30:25,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:30:25,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:30:25,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:30:25,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:30:25,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:30:25,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:30:25,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:30:25,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:30:25,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:30:25,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:30:25,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:30:25,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:30:25,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:30:25,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:30:25,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:30:25,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:30:25,239 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:30:25,239 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:30:25,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:30:25,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:30:25,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:30:25,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:30:25,483 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:30:25,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.06.cil-2.c [2022-01-10 19:30:25,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9eb0a5fb/77a6c720741649c08641fdada1ac1989/FLAG958223b98 [2022-01-10 19:30:26,357 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:30:26,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.06.cil-2.c [2022-01-10 19:30:26,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9eb0a5fb/77a6c720741649c08641fdada1ac1989/FLAG958223b98 [2022-01-10 19:30:26,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9eb0a5fb/77a6c720741649c08641fdada1ac1989 [2022-01-10 19:30:26,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:30:26,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:30:26,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:30:26,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:30:26,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:30:26,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:30:26" (1/1) ... [2022-01-10 19:30:26,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444b7300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:26, skipping insertion in model container [2022-01-10 19:30:26,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:30:26" (1/1) ... [2022-01-10 19:30:26,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:30:27,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:30:28,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.06.cil-2.c[380323,380336] [2022-01-10 19:30:28,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.06.cil-2.c[383339,383352] [2022-01-10 19:30:28,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:30:28,748 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:30:29,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.06.cil-2.c[380323,380336] [2022-01-10 19:30:29,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.06.cil-2.c[383339,383352] [2022-01-10 19:30:29,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:30:29,609 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:30:29,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29 WrapperNode [2022-01-10 19:30:29,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:30:29,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:30:29,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:30:29,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:30:29,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:29,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,151 INFO L137 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 54, calls inlined = 123, statements flattened = 13985 [2022-01-10 19:30:30,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:30:30,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:30:30,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:30:30,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:30:30,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:30:30,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:30:30,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:30:30,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:30:30,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (1/1) ... [2022-01-10 19:30:30,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:30:30,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:30:30,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:30:30,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:30:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:30:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:30:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:30:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:30:30,940 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:30:30,941 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:30:39,086 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:30:39,127 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:30:39,128 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 19:30:39,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:30:39 BoogieIcfgContainer [2022-01-10 19:30:39,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:30:39,133 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:30:39,133 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:30:39,134 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:30:39,136 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:30:39" (1/1) ... [2022-01-10 19:30:40,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:30:40 BasicIcfg [2022-01-10 19:30:40,747 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:30:40,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:30:40,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:30:40,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:30:40,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:30:26" (1/4) ... [2022-01-10 19:30:40,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc78689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:30:40, skipping insertion in model container [2022-01-10 19:30:40,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:30:29" (2/4) ... [2022-01-10 19:30:40,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc78689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:30:40, skipping insertion in model container [2022-01-10 19:30:40,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:30:39" (3/4) ... [2022-01-10 19:30:40,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc78689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:30:40, skipping insertion in model container [2022-01-10 19:30:40,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:30:40" (4/4) ... [2022-01-10 19:30:40,753 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.06.cil-2.cTransformedIcfg [2022-01-10 19:30:40,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:30:40,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:30:40,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:30:40,807 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:30:40,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:30:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:40,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:40,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:40,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash 58261984, now seen corresponding path program 1 times [2022-01-10 19:30:40,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:40,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972237592] [2022-01-10 19:30:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:40,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:41,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:41,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972237592] [2022-01-10 19:30:41,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972237592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:41,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:41,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:41,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337174543] [2022-01-10 19:30:41,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:41,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:41,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:41,247 INFO L87 Difference]: Start difference. First operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:41,512 INFO L93 Difference]: Finished difference Result 6273 states and 11062 transitions. [2022-01-10 19:30:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:41,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:41,544 INFO L225 Difference]: With dead ends: 6273 [2022-01-10 19:30:41,544 INFO L226 Difference]: Without dead ends: 3345 [2022-01-10 19:30:41,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:41,559 INFO L933 BasicCegarLoop]: 5041 mSDtfsCounter, 4956 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 5914 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:41,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 5914 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:30:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-01-10 19:30:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3343. [2022-01-10 19:30:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7291230170607603) internal successors, (5777), 3342 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5777 transitions. [2022-01-10 19:30:41,741 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5777 transitions. Word has length 99 [2022-01-10 19:30:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:41,741 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5777 transitions. [2022-01-10 19:30:41,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5777 transitions. [2022-01-10 19:30:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:41,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:41,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:41,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:30:41,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:41,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:41,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1226458239, now seen corresponding path program 1 times [2022-01-10 19:30:41,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:41,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591189913] [2022-01-10 19:30:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:41,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:41,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591189913] [2022-01-10 19:30:41,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591189913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:41,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:41,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:41,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725441086] [2022-01-10 19:30:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:41,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:41,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:41,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:41,873 INFO L87 Difference]: Start difference. First operand 3343 states and 5777 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:41,966 INFO L93 Difference]: Finished difference Result 4551 states and 7574 transitions. [2022-01-10 19:30:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:41,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:41,980 INFO L225 Difference]: With dead ends: 4551 [2022-01-10 19:30:41,981 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:41,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:41,985 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4959 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:41,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 4968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7267285243938941) internal successors, (5769), 3342 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5769 transitions. [2022-01-10 19:30:42,063 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5769 transitions. Word has length 99 [2022-01-10 19:30:42,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:42,064 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5769 transitions. [2022-01-10 19:30:42,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5769 transitions. [2022-01-10 19:30:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:42,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:42,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:42,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:30:42,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:42,076 INFO L85 PathProgramCache]: Analyzing trace with hash -237520545, now seen corresponding path program 1 times [2022-01-10 19:30:42,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:42,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343289760] [2022-01-10 19:30:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:42,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:42,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:42,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343289760] [2022-01-10 19:30:42,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343289760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:42,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:42,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:42,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793222892] [2022-01-10 19:30:42,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:42,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:42,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:42,184 INFO L87 Difference]: Start difference. First operand 3343 states and 5769 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:42,256 INFO L93 Difference]: Finished difference Result 4550 states and 7557 transitions. [2022-01-10 19:30:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:42,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:42,269 INFO L225 Difference]: With dead ends: 4550 [2022-01-10 19:30:42,269 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:42,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:42,280 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 4953 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:42,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 4963 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.724334031727028) internal successors, (5761), 3342 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5761 transitions. [2022-01-10 19:30:42,371 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5761 transitions. Word has length 99 [2022-01-10 19:30:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:42,373 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5761 transitions. [2022-01-10 19:30:42,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5761 transitions. [2022-01-10 19:30:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:42,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:42,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:42,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:30:42,379 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1932011647, now seen corresponding path program 1 times [2022-01-10 19:30:42,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:42,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153599586] [2022-01-10 19:30:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:42,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:42,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:42,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153599586] [2022-01-10 19:30:42,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153599586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:42,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:42,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:42,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286250592] [2022-01-10 19:30:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:42,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:42,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:42,448 INFO L87 Difference]: Start difference. First operand 3343 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:42,527 INFO L93 Difference]: Finished difference Result 4549 states and 7540 transitions. [2022-01-10 19:30:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:42,540 INFO L225 Difference]: With dead ends: 4549 [2022-01-10 19:30:42,540 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:42,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:42,548 INFO L933 BasicCegarLoop]: 4958 mSDtfsCounter, 4947 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:42,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 4958 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:42,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7219395390601617) internal successors, (5753), 3342 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5753 transitions. [2022-01-10 19:30:42,635 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5753 transitions. Word has length 99 [2022-01-10 19:30:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:42,636 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5753 transitions. [2022-01-10 19:30:42,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5753 transitions. [2022-01-10 19:30:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:42,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:42,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:42,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:30:42,637 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 477975903, now seen corresponding path program 1 times [2022-01-10 19:30:42,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:42,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695977651] [2022-01-10 19:30:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:42,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:42,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:42,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695977651] [2022-01-10 19:30:42,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695977651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:42,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:42,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:42,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123195377] [2022-01-10 19:30:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:42,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:42,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:42,697 INFO L87 Difference]: Start difference. First operand 3343 states and 5753 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:42,862 INFO L93 Difference]: Finished difference Result 4548 states and 7523 transitions. [2022-01-10 19:30:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:42,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:42,876 INFO L225 Difference]: With dead ends: 4548 [2022-01-10 19:30:42,877 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:42,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:42,880 INFO L933 BasicCegarLoop]: 4953 mSDtfsCounter, 4941 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:42,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 4953 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:42,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7195450463932955) internal successors, (5745), 3342 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5745 transitions. [2022-01-10 19:30:42,996 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5745 transitions. Word has length 99 [2022-01-10 19:30:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:42,996 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5745 transitions. [2022-01-10 19:30:42,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5745 transitions. [2022-01-10 19:30:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:42,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:42,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:42,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:30:42,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1261354878, now seen corresponding path program 1 times [2022-01-10 19:30:43,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:43,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137136005] [2022-01-10 19:30:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:43,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:43,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:43,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137136005] [2022-01-10 19:30:43,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137136005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:43,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:43,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:43,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848114955] [2022-01-10 19:30:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:43,070 INFO L87 Difference]: Start difference. First operand 3343 states and 5745 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:43,168 INFO L93 Difference]: Finished difference Result 4547 states and 7506 transitions. [2022-01-10 19:30:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:43,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:43,182 INFO L225 Difference]: With dead ends: 4547 [2022-01-10 19:30:43,182 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:43,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:43,188 INFO L933 BasicCegarLoop]: 4948 mSDtfsCounter, 4935 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:43,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4935 Valid, 4948 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:43,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.717150553726429) internal successors, (5737), 3342 states have internal predecessors, (5737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5737 transitions. [2022-01-10 19:30:43,301 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5737 transitions. Word has length 99 [2022-01-10 19:30:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:43,301 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5737 transitions. [2022-01-10 19:30:43,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5737 transitions. [2022-01-10 19:30:43,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:43,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:43,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:43,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:30:43,303 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash 665429086, now seen corresponding path program 1 times [2022-01-10 19:30:43,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:43,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647724077] [2022-01-10 19:30:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:43,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:43,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:43,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647724077] [2022-01-10 19:30:43,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647724077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:43,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:43,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:43,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315686486] [2022-01-10 19:30:43,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:43,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:43,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:43,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:43,358 INFO L87 Difference]: Start difference. First operand 3343 states and 5737 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:43,454 INFO L93 Difference]: Finished difference Result 4546 states and 7489 transitions. [2022-01-10 19:30:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:43,474 INFO L225 Difference]: With dead ends: 4546 [2022-01-10 19:30:43,474 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:43,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:43,479 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 4929 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:43,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4929 Valid, 4943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:43,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.714756061059563) internal successors, (5729), 3342 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5729 transitions. [2022-01-10 19:30:43,588 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5729 transitions. Word has length 99 [2022-01-10 19:30:43,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:43,588 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5729 transitions. [2022-01-10 19:30:43,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5729 transitions. [2022-01-10 19:30:43,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:43,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:43,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:43,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:30:43,590 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:43,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1338942334, now seen corresponding path program 1 times [2022-01-10 19:30:43,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:43,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344068340] [2022-01-10 19:30:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:43,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:43,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:43,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344068340] [2022-01-10 19:30:43,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344068340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:43,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:43,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:43,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537215913] [2022-01-10 19:30:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:43,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:43,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:43,643 INFO L87 Difference]: Start difference. First operand 3343 states and 5729 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:43,766 INFO L93 Difference]: Finished difference Result 4545 states and 7472 transitions. [2022-01-10 19:30:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:43,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:43,781 INFO L225 Difference]: With dead ends: 4545 [2022-01-10 19:30:43,782 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:43,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:43,786 INFO L933 BasicCegarLoop]: 4920 mSDtfsCounter, 4842 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:43,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 4988 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7075725830589643) internal successors, (5705), 3342 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5705 transitions. [2022-01-10 19:30:43,911 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5705 transitions. Word has length 99 [2022-01-10 19:30:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:43,912 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5705 transitions. [2022-01-10 19:30:43,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5705 transitions. [2022-01-10 19:30:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:43,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:43,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:43,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:30:43,914 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash 845788381, now seen corresponding path program 1 times [2022-01-10 19:30:43,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:43,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182051810] [2022-01-10 19:30:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:43,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:43,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:43,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182051810] [2022-01-10 19:30:43,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182051810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:43,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:43,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:43,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567373515] [2022-01-10 19:30:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:43,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:43,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:43,961 INFO L87 Difference]: Start difference. First operand 3343 states and 5705 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:44,078 INFO L93 Difference]: Finished difference Result 4544 states and 7423 transitions. [2022-01-10 19:30:44,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:44,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:44,087 INFO L225 Difference]: With dead ends: 4544 [2022-01-10 19:30:44,087 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:44,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:44,092 INFO L933 BasicCegarLoop]: 4906 mSDtfsCounter, 4828 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:44,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4828 Valid, 4973 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7003891050583657) internal successors, (5681), 3342 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5681 transitions. [2022-01-10 19:30:44,269 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5681 transitions. Word has length 99 [2022-01-10 19:30:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:44,270 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5681 transitions. [2022-01-10 19:30:44,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5681 transitions. [2022-01-10 19:30:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:44,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:44,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:44,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:30:44,274 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1779661253, now seen corresponding path program 1 times [2022-01-10 19:30:44,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:44,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120469059] [2022-01-10 19:30:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:44,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:44,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:44,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120469059] [2022-01-10 19:30:44,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120469059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:44,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:44,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:44,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700881369] [2022-01-10 19:30:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:44,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:44,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:44,317 INFO L87 Difference]: Start difference. First operand 3343 states and 5681 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:44,410 INFO L93 Difference]: Finished difference Result 4543 states and 7374 transitions. [2022-01-10 19:30:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:44,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:44,418 INFO L225 Difference]: With dead ends: 4543 [2022-01-10 19:30:44,418 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:44,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:44,422 INFO L933 BasicCegarLoop]: 4892 mSDtfsCounter, 4814 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4814 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:44,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4814 Valid, 4958 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6932056270577671) internal successors, (5657), 3342 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5657 transitions. [2022-01-10 19:30:44,511 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5657 transitions. Word has length 99 [2022-01-10 19:30:44,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:44,511 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5657 transitions. [2022-01-10 19:30:44,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5657 transitions. [2022-01-10 19:30:44,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:44,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:44,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:44,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:30:44,513 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1460873702, now seen corresponding path program 1 times [2022-01-10 19:30:44,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:44,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680877709] [2022-01-10 19:30:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:44,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:44,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680877709] [2022-01-10 19:30:44,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680877709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:44,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:44,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:44,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424373865] [2022-01-10 19:30:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:44,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:44,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:44,553 INFO L87 Difference]: Start difference. First operand 3343 states and 5657 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:44,643 INFO L93 Difference]: Finished difference Result 4542 states and 7325 transitions. [2022-01-10 19:30:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:44,650 INFO L225 Difference]: With dead ends: 4542 [2022-01-10 19:30:44,650 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:44,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:44,653 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4800 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:44,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4800 Valid, 4943 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6860221490571685) internal successors, (5633), 3342 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5633 transitions. [2022-01-10 19:30:44,734 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5633 transitions. Word has length 99 [2022-01-10 19:30:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:44,734 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5633 transitions. [2022-01-10 19:30:44,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5633 transitions. [2022-01-10 19:30:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:44,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:44,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:44,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:30:44,735 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1583723655, now seen corresponding path program 1 times [2022-01-10 19:30:44,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:44,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751385557] [2022-01-10 19:30:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:44,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:44,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:44,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751385557] [2022-01-10 19:30:44,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751385557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:44,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:44,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:44,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006608974] [2022-01-10 19:30:44,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:44,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:44,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:44,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:44,770 INFO L87 Difference]: Start difference. First operand 3343 states and 5633 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:44,864 INFO L93 Difference]: Finished difference Result 4541 states and 7276 transitions. [2022-01-10 19:30:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:44,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:44,872 INFO L225 Difference]: With dead ends: 4541 [2022-01-10 19:30:44,872 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:44,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:44,876 INFO L933 BasicCegarLoop]: 4864 mSDtfsCounter, 4786 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:44,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 4928 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.67883867105657) internal successors, (5609), 3342 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5609 transitions. [2022-01-10 19:30:44,960 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5609 transitions. Word has length 99 [2022-01-10 19:30:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:44,960 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5609 transitions. [2022-01-10 19:30:44,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5609 transitions. [2022-01-10 19:30:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:44,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:44,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:44,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:30:44,962 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:44,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2109498920, now seen corresponding path program 1 times [2022-01-10 19:30:44,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847730579] [2022-01-10 19:30:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:44,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:45,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847730579] [2022-01-10 19:30:45,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847730579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:45,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:45,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:45,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293588264] [2022-01-10 19:30:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:45,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:45,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:45,007 INFO L87 Difference]: Start difference. First operand 3343 states and 5609 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:45,108 INFO L93 Difference]: Finished difference Result 4540 states and 7227 transitions. [2022-01-10 19:30:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:45,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:45,116 INFO L225 Difference]: With dead ends: 4540 [2022-01-10 19:30:45,116 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:45,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:45,120 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 4772 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:45,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4772 Valid, 4913 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6716551930559713) internal successors, (5585), 3342 states have internal predecessors, (5585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5585 transitions. [2022-01-10 19:30:45,232 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5585 transitions. Word has length 99 [2022-01-10 19:30:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:45,233 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5585 transitions. [2022-01-10 19:30:45,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5585 transitions. [2022-01-10 19:30:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:45,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:45,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:45,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:30:45,235 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 674921911, now seen corresponding path program 1 times [2022-01-10 19:30:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313922827] [2022-01-10 19:30:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:45,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:45,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:45,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313922827] [2022-01-10 19:30:45,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313922827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:45,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:45,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:45,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969729569] [2022-01-10 19:30:45,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:45,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:45,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:45,279 INFO L87 Difference]: Start difference. First operand 3343 states and 5585 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:45,413 INFO L93 Difference]: Finished difference Result 4539 states and 7178 transitions. [2022-01-10 19:30:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:45,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:45,421 INFO L225 Difference]: With dead ends: 4539 [2022-01-10 19:30:45,421 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:30:45,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:45,424 INFO L933 BasicCegarLoop]: 4836 mSDtfsCounter, 4758 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:45,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 4898 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:30:45,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 19:30:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6644717150553727) internal successors, (5561), 3342 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5561 transitions. [2022-01-10 19:30:45,573 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5561 transitions. Word has length 99 [2022-01-10 19:30:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:45,573 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5561 transitions. [2022-01-10 19:30:45,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5561 transitions. [2022-01-10 19:30:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:45,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:45,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:45,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:30:45,575 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1309635946, now seen corresponding path program 1 times [2022-01-10 19:30:45,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:45,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348941564] [2022-01-10 19:30:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:45,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:45,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:45,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348941564] [2022-01-10 19:30:45,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348941564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:45,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:45,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:30:45,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172731410] [2022-01-10 19:30:45,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:45,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:30:45,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:30:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:30:45,637 INFO L87 Difference]: Start difference. First operand 3343 states and 5561 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:45,905 INFO L93 Difference]: Finished difference Result 5135 states and 7947 transitions. [2022-01-10 19:30:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:30:45,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:45,913 INFO L225 Difference]: With dead ends: 5135 [2022-01-10 19:30:45,914 INFO L226 Difference]: Without dead ends: 3953 [2022-01-10 19:30:45,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:30:45,919 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 2369 mSDsluCounter, 13177 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 18087 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:45,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2369 Valid, 18087 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:30:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2022-01-10 19:30:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3349. [2022-01-10 19:30:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3347 states have (on average 1.6585001493875111) internal successors, (5551), 3348 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5551 transitions. [2022-01-10 19:30:46,034 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5551 transitions. Word has length 99 [2022-01-10 19:30:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:46,034 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5551 transitions. [2022-01-10 19:30:46,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5551 transitions. [2022-01-10 19:30:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:46,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:46,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:46,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:30:46,036 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1818635031, now seen corresponding path program 1 times [2022-01-10 19:30:46,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:46,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645903866] [2022-01-10 19:30:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:46,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:46,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:46,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645903866] [2022-01-10 19:30:46,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645903866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:46,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:46,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:30:46,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129364963] [2022-01-10 19:30:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:46,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:30:46,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:30:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:30:46,100 INFO L87 Difference]: Start difference. First operand 3349 states and 5551 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:46,418 INFO L93 Difference]: Finished difference Result 5534 states and 8421 transitions. [2022-01-10 19:30:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:30:46,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:46,427 INFO L225 Difference]: With dead ends: 5534 [2022-01-10 19:30:46,427 INFO L226 Difference]: Without dead ends: 4381 [2022-01-10 19:30:46,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:30:46,432 INFO L933 BasicCegarLoop]: 4809 mSDtfsCounter, 1808 mSDsluCounter, 14197 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:46,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1808 Valid, 19006 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:30:46,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-01-10 19:30:46,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3355. [2022-01-10 19:30:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3353 states have (on average 1.6525499552639427) internal successors, (5541), 3354 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 5541 transitions. [2022-01-10 19:30:46,564 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 5541 transitions. Word has length 99 [2022-01-10 19:30:46,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:46,564 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 5541 transitions. [2022-01-10 19:30:46,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:46,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 5541 transitions. [2022-01-10 19:30:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 19:30:46,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:46,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:46,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:30:46,565 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:46,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2125532328, now seen corresponding path program 1 times [2022-01-10 19:30:46,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:46,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592167416] [2022-01-10 19:30:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:46,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:46,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:46,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592167416] [2022-01-10 19:30:46,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592167416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:46,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:46,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:30:46,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179417100] [2022-01-10 19:30:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:46,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:46,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:46,611 INFO L87 Difference]: Start difference. First operand 3355 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:46,825 INFO L93 Difference]: Finished difference Result 5678 states and 8530 transitions. [2022-01-10 19:30:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:46,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 19:30:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:46,836 INFO L225 Difference]: With dead ends: 5678 [2022-01-10 19:30:46,837 INFO L226 Difference]: Without dead ends: 4472 [2022-01-10 19:30:46,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:46,841 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 4708 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:46,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 5560 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2022-01-10 19:30:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4370. [2022-01-10 19:30:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4368 states have (on average 1.5647893772893773) internal successors, (6835), 4369 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6835 transitions. [2022-01-10 19:30:47,083 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6835 transitions. Word has length 99 [2022-01-10 19:30:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:47,083 INFO L470 AbstractCegarLoop]: Abstraction has 4370 states and 6835 transitions. [2022-01-10 19:30:47,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6835 transitions. [2022-01-10 19:30:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:30:47,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:47,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:47,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:30:47,087 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1987499719, now seen corresponding path program 1 times [2022-01-10 19:30:47,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:47,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352151767] [2022-01-10 19:30:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:47,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:47,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:47,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352151767] [2022-01-10 19:30:47,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352151767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:47,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:47,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:30:47,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794436707] [2022-01-10 19:30:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:47,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:47,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:47,157 INFO L87 Difference]: Start difference. First operand 4370 states and 6835 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:47,580 INFO L93 Difference]: Finished difference Result 8667 states and 12347 transitions. [2022-01-10 19:30:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:47,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-10 19:30:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:47,596 INFO L225 Difference]: With dead ends: 8667 [2022-01-10 19:30:47,596 INFO L226 Difference]: Without dead ends: 6452 [2022-01-10 19:30:47,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:47,603 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 4723 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:47,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 5557 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-01-10 19:30:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 6278. [2022-01-10 19:30:47,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6276 states have (on average 1.4765774378585086) internal successors, (9267), 6277 states have internal predecessors, (9267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9267 transitions. [2022-01-10 19:30:47,953 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9267 transitions. Word has length 160 [2022-01-10 19:30:47,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:47,953 INFO L470 AbstractCegarLoop]: Abstraction has 6278 states and 9267 transitions. [2022-01-10 19:30:47,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9267 transitions. [2022-01-10 19:30:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:30:47,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:47,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:47,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:30:47,957 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash 188793081, now seen corresponding path program 1 times [2022-01-10 19:30:47,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:47,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109471186] [2022-01-10 19:30:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:47,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:48,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:48,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109471186] [2022-01-10 19:30:48,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109471186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:48,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:48,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:30:48,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848437834] [2022-01-10 19:30:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:48,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:48,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:48,035 INFO L87 Difference]: Start difference. First operand 6278 states and 9267 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:48,523 INFO L93 Difference]: Finished difference Result 14139 states and 19223 transitions. [2022-01-10 19:30:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-10 19:30:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:48,551 INFO L225 Difference]: With dead ends: 14139 [2022-01-10 19:30:48,551 INFO L226 Difference]: Without dead ends: 10071 [2022-01-10 19:30:48,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:48,561 INFO L933 BasicCegarLoop]: 5220 mSDtfsCounter, 4583 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 6070 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:48,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4583 Valid, 6070 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2022-01-10 19:30:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 10069. [2022-01-10 19:30:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10069 states, 10067 states have (on average 1.3893910797655706) internal successors, (13987), 10068 states have internal predecessors, (13987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 13987 transitions. [2022-01-10 19:30:49,070 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 13987 transitions. Word has length 160 [2022-01-10 19:30:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:49,071 INFO L470 AbstractCegarLoop]: Abstraction has 10069 states and 13987 transitions. [2022-01-10 19:30:49,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 13987 transitions. [2022-01-10 19:30:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:30:49,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:49,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:49,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:30:49,077 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash -116841448, now seen corresponding path program 1 times [2022-01-10 19:30:49,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:49,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898757843] [2022-01-10 19:30:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:49,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:30:49,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:49,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898757843] [2022-01-10 19:30:49,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898757843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:49,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:49,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:30:49,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677562] [2022-01-10 19:30:49,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:49,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:49,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:49,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:49,110 INFO L87 Difference]: Start difference. First operand 10069 states and 13987 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:49,624 INFO L93 Difference]: Finished difference Result 17845 states and 23812 transitions. [2022-01-10 19:30:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:49,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-10 19:30:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:49,646 INFO L225 Difference]: With dead ends: 17845 [2022-01-10 19:30:49,647 INFO L226 Difference]: Without dead ends: 9986 [2022-01-10 19:30:49,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:49,659 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 864 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 8784 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:49,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 8784 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2022-01-10 19:30:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2022-01-10 19:30:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9984 states have (on average 1.391025641025641) internal successors, (13888), 9985 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 13888 transitions. [2022-01-10 19:30:50,098 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 13888 transitions. Word has length 160 [2022-01-10 19:30:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:50,099 INFO L470 AbstractCegarLoop]: Abstraction has 9986 states and 13888 transitions. [2022-01-10 19:30:50,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 13888 transitions. [2022-01-10 19:30:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 19:30:50,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:50,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:50,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:30:50,106 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 886799409, now seen corresponding path program 1 times [2022-01-10 19:30:50,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:50,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760904551] [2022-01-10 19:30:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:50,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:50,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:50,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760904551] [2022-01-10 19:30:50,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760904551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:50,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:50,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:30:50,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049677226] [2022-01-10 19:30:50,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:50,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:50,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:50,163 INFO L87 Difference]: Start difference. First operand 9986 states and 13888 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:50,958 INFO L93 Difference]: Finished difference Result 25140 states and 32946 transitions. [2022-01-10 19:30:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-01-10 19:30:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:51,001 INFO L225 Difference]: With dead ends: 25140 [2022-01-10 19:30:51,001 INFO L226 Difference]: Without dead ends: 17364 [2022-01-10 19:30:51,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:51,021 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 4724 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5858 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:51,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5858 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17364 states. [2022-01-10 19:30:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17364 to 16850. [2022-01-10 19:30:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16850 states, 16848 states have (on average 1.331908831908832) internal successors, (22440), 16849 states have internal predecessors, (22440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16850 states to 16850 states and 22440 transitions. [2022-01-10 19:30:51,944 INFO L78 Accepts]: Start accepts. Automaton has 16850 states and 22440 transitions. Word has length 161 [2022-01-10 19:30:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:51,945 INFO L470 AbstractCegarLoop]: Abstraction has 16850 states and 22440 transitions. [2022-01-10 19:30:51,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 16850 states and 22440 transitions. [2022-01-10 19:30:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 19:30:51,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:51,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:51,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:30:51,953 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -456380654, now seen corresponding path program 1 times [2022-01-10 19:30:51,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:51,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301260308] [2022-01-10 19:30:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:51,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:30:51,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:51,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301260308] [2022-01-10 19:30:51,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301260308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:51,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:51,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:30:51,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661160203] [2022-01-10 19:30:51,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:51,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:51,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:51,988 INFO L87 Difference]: Start difference. First operand 16850 states and 22440 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:52,667 INFO L93 Difference]: Finished difference Result 31452 states and 40772 transitions. [2022-01-10 19:30:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:52,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-01-10 19:30:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:52,709 INFO L225 Difference]: With dead ends: 31452 [2022-01-10 19:30:52,709 INFO L226 Difference]: Without dead ends: 16768 [2022-01-10 19:30:52,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:52,735 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 862 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 8783 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:52,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 8783 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:52,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2022-01-10 19:30:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16768. [2022-01-10 19:30:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16768 states, 16766 states have (on average 1.3326374806155314) internal successors, (22343), 16767 states have internal predecessors, (22343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16768 states to 16768 states and 22343 transitions. [2022-01-10 19:30:53,826 INFO L78 Accepts]: Start accepts. Automaton has 16768 states and 22343 transitions. Word has length 161 [2022-01-10 19:30:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:53,826 INFO L470 AbstractCegarLoop]: Abstraction has 16768 states and 22343 transitions. [2022-01-10 19:30:53,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16768 states and 22343 transitions. [2022-01-10 19:30:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 19:30:53,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:53,837 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:53,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:30:53,837 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1966576152, now seen corresponding path program 1 times [2022-01-10 19:30:53,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:53,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642035118] [2022-01-10 19:30:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:53,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:30:53,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:53,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642035118] [2022-01-10 19:30:53,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642035118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:53,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:53,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:30:53,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18452869] [2022-01-10 19:30:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:53,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:53,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:53,909 INFO L87 Difference]: Start difference. First operand 16768 states and 22343 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:55,343 INFO L93 Difference]: Finished difference Result 44901 states and 57575 transitions. [2022-01-10 19:30:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 19:30:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:55,413 INFO L225 Difference]: With dead ends: 44901 [2022-01-10 19:30:55,413 INFO L226 Difference]: Without dead ends: 30343 [2022-01-10 19:30:55,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:55,447 INFO L933 BasicCegarLoop]: 5020 mSDtfsCounter, 4724 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5857 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:55,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5857 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:55,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30343 states. [2022-01-10 19:30:56,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30343 to 29541. [2022-01-10 19:30:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29541 states, 29539 states have (on average 1.2947290023358948) internal successors, (38245), 29540 states have internal predecessors, (38245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29541 states to 29541 states and 38245 transitions. [2022-01-10 19:30:57,049 INFO L78 Accepts]: Start accepts. Automaton has 29541 states and 38245 transitions. Word has length 162 [2022-01-10 19:30:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:30:57,049 INFO L470 AbstractCegarLoop]: Abstraction has 29541 states and 38245 transitions. [2022-01-10 19:30:57,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:57,049 INFO L276 IsEmpty]: Start isEmpty. Operand 29541 states and 38245 transitions. [2022-01-10 19:30:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 19:30:57,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:30:57,064 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:30:57,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:30:57,064 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:30:57,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:30:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1912459259, now seen corresponding path program 1 times [2022-01-10 19:30:57,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:30:57,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651620434] [2022-01-10 19:30:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:30:57,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:30:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:30:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:30:57,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:30:57,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651620434] [2022-01-10 19:30:57,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651620434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:30:57,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:30:57,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:30:57,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673005707] [2022-01-10 19:30:57,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:30:57,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:30:57,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:30:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:30:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:57,101 INFO L87 Difference]: Start difference. First operand 29541 states and 38245 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:30:58,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:30:58,480 INFO L93 Difference]: Finished difference Result 56828 states and 72376 transitions. [2022-01-10 19:30:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:30:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 19:30:58,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:30:58,526 INFO L225 Difference]: With dead ends: 56828 [2022-01-10 19:30:58,526 INFO L226 Difference]: Without dead ends: 29460 [2022-01-10 19:30:58,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:30:58,558 INFO L933 BasicCegarLoop]: 4824 mSDtfsCounter, 860 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 8782 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:30:58,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 8782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:30:58,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2022-01-10 19:31:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 29460. [2022-01-10 19:31:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29460 states, 29458 states have (on average 1.295064159141829) internal successors, (38150), 29459 states have internal predecessors, (38150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29460 states to 29460 states and 38150 transitions. [2022-01-10 19:31:00,421 INFO L78 Accepts]: Start accepts. Automaton has 29460 states and 38150 transitions. Word has length 162 [2022-01-10 19:31:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:31:00,421 INFO L470 AbstractCegarLoop]: Abstraction has 29460 states and 38150 transitions. [2022-01-10 19:31:00,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 29460 states and 38150 transitions. [2022-01-10 19:31:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 19:31:00,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:31:00,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:31:00,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:31:00,432 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:31:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:31:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash 40185600, now seen corresponding path program 1 times [2022-01-10 19:31:00,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:31:00,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818340860] [2022-01-10 19:31:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:31:00,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:31:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:31:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:31:00,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:31:00,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818340860] [2022-01-10 19:31:00,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818340860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:31:00,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:31:00,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:31:00,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709252752] [2022-01-10 19:31:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:31:00,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:31:00,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:31:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:31:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:31:00,519 INFO L87 Difference]: Start difference. First operand 29460 states and 38150 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:31:03,273 INFO L93 Difference]: Finished difference Result 81560 states and 103188 transitions. [2022-01-10 19:31:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:31:03,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-01-10 19:31:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:31:03,368 INFO L225 Difference]: With dead ends: 81560 [2022-01-10 19:31:03,369 INFO L226 Difference]: Without dead ends: 54310 [2022-01-10 19:31:03,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:31:03,403 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 4654 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:31:03,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 5840 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:31:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54310 states. [2022-01-10 19:31:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54310 to 53156. [2022-01-10 19:31:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53156 states, 53154 states have (on average 1.27181397448922) internal successors, (67602), 53155 states have internal predecessors, (67602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53156 states to 53156 states and 67602 transitions. [2022-01-10 19:31:06,558 INFO L78 Accepts]: Start accepts. Automaton has 53156 states and 67602 transitions. Word has length 163 [2022-01-10 19:31:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:31:06,559 INFO L470 AbstractCegarLoop]: Abstraction has 53156 states and 67602 transitions. [2022-01-10 19:31:06,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 53156 states and 67602 transitions. [2022-01-10 19:31:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 19:31:06,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:31:06,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:31:06,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:31:06,576 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:31:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:31:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 811104480, now seen corresponding path program 1 times [2022-01-10 19:31:06,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:31:06,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558633970] [2022-01-10 19:31:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:31:06,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:31:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:31:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:31:06,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:31:06,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558633970] [2022-01-10 19:31:06,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558633970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:31:06,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:31:06,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:31:06,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061964353] [2022-01-10 19:31:06,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:31:06,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:31:06,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:31:06,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:31:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:31:06,617 INFO L87 Difference]: Start difference. First operand 53156 states and 67602 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:31:09,848 INFO L93 Difference]: Finished difference Result 104052 states and 131084 transitions. [2022-01-10 19:31:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:31:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-01-10 19:31:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:31:09,946 INFO L225 Difference]: With dead ends: 104052 [2022-01-10 19:31:09,946 INFO L226 Difference]: Without dead ends: 53076 [2022-01-10 19:31:09,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:31:09,983 INFO L933 BasicCegarLoop]: 4823 mSDtfsCounter, 858 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:31:09,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 8781 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:31:10,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53076 states. [2022-01-10 19:31:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53076 to 53076. [2022-01-10 19:31:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53076 states, 53074 states have (on average 1.271978746655613) internal successors, (67509), 53075 states have internal predecessors, (67509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53076 states to 53076 states and 67509 transitions. [2022-01-10 19:31:13,377 INFO L78 Accepts]: Start accepts. Automaton has 53076 states and 67509 transitions. Word has length 163 [2022-01-10 19:31:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:31:13,378 INFO L470 AbstractCegarLoop]: Abstraction has 53076 states and 67509 transitions. [2022-01-10 19:31:13,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 53076 states and 67509 transitions. [2022-01-10 19:31:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 19:31:13,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:31:13,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:31:13,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 19:31:13,397 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:31:13,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:31:13,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1769434718, now seen corresponding path program 1 times [2022-01-10 19:31:13,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:31:13,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493498400] [2022-01-10 19:31:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:31:13,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:31:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:31:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:31:13,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:31:13,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493498400] [2022-01-10 19:31:13,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493498400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:31:13,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:31:13,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:31:13,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312276740] [2022-01-10 19:31:13,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:31:13,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:31:13,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:31:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:31:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:31:13,457 INFO L87 Difference]: Start difference. First operand 53076 states and 67509 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:31:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:31:18,654 INFO L93 Difference]: Finished difference Result 149103 states and 187025 transitions. [2022-01-10 19:31:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:31:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-01-10 19:31:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:31:18,802 INFO L225 Difference]: With dead ends: 149103 [2022-01-10 19:31:18,802 INFO L226 Difference]: Without dead ends: 98237 [2022-01-10 19:31:18,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:31:18,845 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4724 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:31:18,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5801 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:31:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98237 states.